# Waterdrop WD-TSA-UF 0.01 μm Under-Sink Water Filter

The Waterdrop WD-TSA-UF is an under-sink ultrafiltration system advertised with a 0.01 μm membrane and three replaceable filters. It is intended for municipal cold-water lines, retains dissolved minerals and does not reduce TDS, so it is not a reverse-osmosis option for buyers seeking lower TDS.

- [Original product page](https://best-deals.pro/product/waterdrop-wd-tsa-uf-ultrafiltration-under-sink-filter)
- [View offer](https://best-deals.pro/visit/waterdrop-wd-tsa-uf-ultrafiltration-under-sink-filter)
- Market: US
- Language: en-US
- Currency: USD
- Brand: Waterdrop
- Model: WD-TSA-UF
- Category: Home & Kitchen > Kitchen Appliances > Water Purifiers
- Price: 111.99 USD
- Previous price: 149.99 USD
- Discount: 25%
- Price checked: 2026-11-14T07:04:45.852Z
- Rating: 4.4 / 5
- Reviews: 295

Prices and deal status are the latest recorded data, not a guarantee of availability. Confirm the price and availability with the store.

## At a glance

- Uses three compact filters in a 9-stage filtration configuration, according to the listing.
- Advertised to help reduce chlorine, taste and odor, fluoride, heavy metals, rust, sediment, sand and particles.
- Designed for standard municipal cold-water connections. The listing says it does not reduce TDS and retains beneficial minerals.
- Twist-and-lock and push-to-connect fittings are described for installation and filter replacement.

## Pros

- The three-filter layout offers staggered replacement intervals rather than replacing every filter on one schedule.
- The stated maximum flow rate is 1.5 gpm, providing a useful published reference for comparing under-sink systems.
- The listed kit includes the system, inlet and outlet hose, a converter set and Teflon tape.

## Cons

- Not suitable for hot-water lines, and the listing says well-water use requires pre-filtration.
- Does not reduce TDS, which rules it out for buyers specifically seeking dissolved-solids reduction.

## Specifications

### Identity
- Brand: Waterdrop
- Model: WD-TSA-UF
### Filtration
- Purification method: Ultra Filtration
- Advertised filtration accuracy: 0.01 μm
- Advertised filtration stages: 9-stage
- Rated capacity: 8000 gallons
- Supported maximum TDS level: 700
### Flow and temperature
- Maximum flow rate: 1.5 gpm
- Lower temperature range: 35 °F
- Upper temperature rating: 100 °F
### Power and configuration
- Power configuration: Mechanical Water Pressure
- Installation type: Under Sink
### Dimensions and installation
- Dimensions listed: 12.9"L x 4.3"W x 12.4"H
### Materials and protection
- Material listed: NSF/ANSI Approved Components
### Filter replacement schedule
- WD-10PP filter life: up to 6 months
- WD-10GC filter life: 8–12 months
- WD-10UF filter life: up to 12 months

## Before you buy

- Use with municipal cold water and not hot water. For well water, the manufacturer recommends a pre-filtration system. The system is stated not to reduce TDS and to retain dissolved minerals.
- The manufacturer describes compatibility with standard 3/8-inch or 1/2-inch female NPT faucet connections. It says quick-connect faucets may need adapter fittings.
- The listing describes the system as 8-stage in one product detail and 9-stage in its feature copy. It also gives a general lifespan of up to 12 months, while separately listing an 18-month filter life cycle and individual filter intervals of up to 6 months, 8–12 months and up to 12 months. Confirm the applicable replacement schedule for the selected filters. The filtration, durability and connection statements are manufacturer claims, not independent verification.

## In the box

- System ×1 (Included)
- Inlet and outlet hose (Included)
- 3/8"–1/2" converter set ×1 (Included)
- Teflon tape ×1 (Included)

## A good fit for

- Households on municipal cold-water supplies looking for an under-sink filter that retains dissolved minerals.
- Buyers who prefer a multi-filter system with listed, staggered replacement intervals.
- People comfortable checking faucet-thread compatibility before installation.

## Less suited to

- Buyers seeking reverse osmosis or reduction of TDS.
- Homes needing filtration for hot-water lines or untreated well water without pre-filtration.

## Customer feedback

Customer feedback reports better-tasting water and generally straightforward installation, while experiences with water pressure, filling speed, filter cost and leakage are mixed. Those concerns matter because the advertised 1.5 gpm maximum is a listing specification, not a guarantee of the flow buyers will see in their plumbing. The feedback also reflects perceived water quality, not independent confirmation of specific contaminant reduction.
- Positive themes: Customers report improved water taste and water quality.
- Positive themes: Installation is described as straightforward and requiring little effort.
- Mixed feedback: Some customers report good pressure, while others describe a substantial pressure drop.
- Mixed feedback: Reports differ on filtration speed, with some finding it fast and others describing slower cup filling.
- Mixed feedback: Some customers report no leaks, while others report leakage. Opinions about filter cost also vary.

## Frequently asked questions

### Does the WD-TSA-UF reduce TDS?
No. The listing says it does not reduce TDS and retains beneficial dissolved minerals.
### Can it be used with well water or hot water?
It is described for municipal cold-water lines, not hot water. For well water, the manufacturer recommends using pre-filtration first.
### How often do the filters need replacement?
The listed intervals are up to 6 months for the WD-10PP, 8–12 months for the WD-10GC and up to 12 months for the WD-10UF, depending on water quality and use.
### What faucet connections does it support?
The listing describes standard 3/8-inch or 1/2-inch female NPT threads. It says quick-connect faucets may require adapter fittings.

## Alternative options

- [Waterdrop G3P600 Tankless Reverse Osmosis Water Filter System Silver Faucet \| NSF/ANSI 42 & 53 & 58 & 372 Certified, 8-Stage RO Water Filtration System Under-Sink, 2:1 Pure to Drain, Smart LED Faucet](https://best-deals.pro/visit/waterdrop-wd-tsa-uf-ultrafiltration-under-sink-filter)
- [Waterdrop M6HG Instant Hot Countertop RO Water Filter, \[ Mineral Added \] \| Glass Pitcher, NSF/ANSI 58 Certified, 8-Stage RO Filtration System, Reduce PFAS/TDS, 3:1 Pure to Drain, Hot & Room-Temp Water](https://best-deals.pro/visit/waterdrop-wd-tsa-uf-ultrafiltration-under-sink-filter)
- [3M Aqua-Pure Under Sink Reverse Osmosis Water Filtration System 3MRO301 \| Compact RO System Reduces Impurities For Clean Drinking Water](https://best-deals.pro/visit/waterdrop-wd-tsa-uf-ultrafiltration-under-sink-filter)
- [Waterdrop KJ600 Instant Hot Reverse Osmosis System, 600 GPD, Tankless RO \| NSF/ANSI 372 Certified, 5-Stage Filtration, PFAS & TDS Reduction, 2:1 Pure to Drain, LED Faucet, Hot and Cold Water Dispenser](https://best-deals.pro/visit/waterdrop-wd-tsa-uf-ultrafiltration-under-sink-filter)
- [Waterdrop T3-M Remineralization Reverse Osmosis Water Filter, 450 GPD \| NSF/ANSI 372 Certified, 9-Stage Tankless RO System, Tankless RO Water Filtration System, 2:1 Pure to Drain, Plug-in Required](https://best-deals.pro/visit/waterdrop-wd-tsa-uf-ultrafiltration-under-sink-filter)
- [Bluevua RO100ROPOT Countertop Reverse Osmosis Water Filter System \| Portable RO Filtration with Remineralization, No Installation, WQA & NSF Certified - ROPOT-UV, 6-Stage RO](https://best-deals.pro/visit/waterdrop-wd-tsa-uf-ultrafiltration-under-sink-filter)
- [Waterdrop X12Alkaline Mineral Reverse Osmosis System 1200 GPD Silver Faucet \| NSF/ANSI 42&58&372 Certified, 11-Stage Filtration, Tankless RO Water Filtration System, 3:1 Pure to Drain Silver Smart Faucet](https://best-deals.pro/visit/waterdrop-wd-tsa-uf-ultrafiltration-under-sink-filter)
- [Frizzlife Reverse Osmosis Water Filter - Alkaline Mineral pH+, NSF/ANSI 58&53&42&372 Standard, 600GPD Tankless RO Reverse Osmosis System, Under Sink, 2:1 Pure to Drain, Reduce FPAS/PFOA, PD600-TAM3](https://best-deals.pro/visit/waterdrop-wd-tsa-uf-ultrafiltration-under-sink-filter)
- [iSpring RO500AK-ORB Reverse Osmosis Water Filter, 500 GPD with Alkaline \| Under Sink Tankless RO Water Filter, Fill 8 oz in 10 s, 2:1 Low Drain Ratio, TDS PFAS Reduction, Auto Flush, Filter Reminder](https://best-deals.pro/visit/waterdrop-wd-tsa-uf-ultrafiltration-under-sink-filter)
- [Waterdrop X8-WAN Alkaline Mineral Tankless Reverse Osmosis System Undersink \| NSF/ANSI 42&58&372 Certified, 800 GPD RO Water Filter System, 10-Stage Filtration, 2:1 Pure to Drain, LED Faucet, BPA-Free](https://best-deals.pro/visit/waterdrop-wd-tsa-uf-ultrafiltration-under-sink-filter)
- [Waterdrop X16 Reverse Osmosis System Alkaline Mineral 1600 GPD Black Faucet \| NSF/ANSI 42 & 58 & 372 Certified, 11-Stage RO Water Filtration System, 3:1 Pure-to-Drain Ratio, Smart Black Faucet, BPA-Free](https://best-deals.pro/visit/waterdrop-wd-tsa-uf-ultrafiltration-under-sink-filter)
- [Waterdrop M6CG Hot & Cold Reverse Osmosis System Countertop, Mineral Added \| Glass Pitcher, NSF/ANSI 58 Certified, 8-Stage RO Filtration, 3:1 Pure to Drain, Hot & Cold & Room-Temp Water, No Installation](https://best-deals.pro/visit/waterdrop-wd-tsa-uf-ultrafiltration-under-sink-filter)

## Add-ons

- [Waterdrop UA-5Y 5-Year Under Sink Water Filter System, Ultra Long Life \| Reduces Lead, Chlorine, Bad Taste & Odor, Water Filt](https://best-deals.pro/visit/waterdrop-wd-tsa-uf-ultrafiltration-under-sink-filter)
- [Waterdrop 10UA-UF 0.01 μm Ultra Filtration Under Sink Water Filter System \| Reduces Lead, Chlorine, Bad Taste & Odor, Connect](https://best-deals.pro/visit/waterdrop-wd-tsa-uf-ultrafiltration-under-sink-filter)

## Images

![Waterdrop WD-TSA-UF 0.01 μm Under-Sink Water Filter — 1](https://best-deals.pro/i/3bH5__jOpxB9uX2R7zHfqcz66syPU76-EeAWDlKN72fZ77nQd6L4bicaYzcPMZUyYHBvfNtsJpOtCv2v_2Tvgob1Euua-85iU9F8Z0TSy1oakb-O5mpV.jpg)

![Waterdrop WD-TSA-UF 0.01 μm Under-Sink Water Filter — 2](https://best-deals.pro/i/2sJHH_BHzb7oLmdSTKZRY_M96eVfeOWcCXFFSrbqg8RHz8cPMgHYQpL3yVcpFmDx8Udf5vw_Li3p9d4eRQXhdBoj1qU4aolnMIpN1tfLfcRNDMeu-fK8.jpg)

![Waterdrop WD-TSA-UF 0.01 μm Under-Sink Water Filter — 3](https://best-deals.pro/i/ZyInIAPPrbofisK5qcprGFe9-3YUUqunYRznFdmJJR2YSp6-t_uC2bJ-ZdHbg4ryP8P_B1G0qQFpodfCsw595CeIkgeGZVzwBmitwQVv0Z68RuhuDafi.jpg)

![Waterdrop WD-TSA-UF 0.01 μm Under-Sink Water Filter — 4](https://best-deals.pro/i/7EVLOsAzT8_sQqxf9KpzwcjA7SD8kon3GYC24S1cYfomcwxvY9lpOog0XtJl3cKx0AWShiPEaxkW3nNWlml7gM3nuQp6pEyCld1FR4iPBdJqr3aLOy1Z.jpg)

![Waterdrop WD-TSA-UF 0.01 μm Under-Sink Water Filter — 5](https://best-deals.pro/i/aF5MbxJHvXUT96QAui9UQFpGcdmP263y0GrBjMGh5ke3O7m7c9Gm7oOt-CAPX5Ld276K3FluCXpE8irIgPHtZYuodpYzyyyJ5m3ZXkBH2_y8m8o116LP.jpg)

![Waterdrop WD-TSA-UF 0.01 μm Under-Sink Water Filter — 6](https://best-deals.pro/i/URjQpG1OMYPJv6HokQaswTjuaX0X82LZ7L49Qt03YCtGNlDPjAfbLzc2_z0QaV7kE2-Dkztc-CooBlmJVv0reXJyEisxYMB4l9R3cjgBx4WXJveT8v6_.jpg)

![Waterdrop WD-TSA-UF 0.01 μm Under-Sink Water Filter — 7](https://best-deals.pro/i/Ekc7LuMB2ITWiEMT9vVKH-JJEyhzKjY3nA2NOHoonMgqOLMDi3EWzf9_6pMJx7DY057uTN5KumMiGWo4Kk4WqD1H4GKLE7Ow7iE_aoxS9uz4eaHuyGPV.jpg)